KR102125220B1 - Phase compensating method, and appratus applied to the same - Google Patents

Abstract

The present invention discloses a phase compensation device and a method of operation thereof. That is, when a transmission signal of a communication method that does not support the Multi Input Multi Output (MIMO) method is divided into a plurality of transmission signals and transmitted to the antenna through different paths, a transmission signal that may occur due to the different paths By compensating the phase difference between, it is possible to prevent the transmission signal from being distorted or canceled due to the phase difference between the transmission signals.

Description

Phase difference compensation method and apparatus applied thereto{PHASE COMPENSATING METHOD, AND APPRATUS APPLIED TO THE SAME}

In the present invention, when a transmission signal of a communication method that does not support the Multi Input Multi Output (MIMO) method is divided into a plurality of transmission signals and transmitted to the antenna through different paths, it may occur due to the different paths. This is to compensate for a phase difference between transmission signals.

In a communication method that does not support the Multi Input Multi Output (MIMO) method (eg, WCDMA), a single transmission signal is divided into a vertically polarized transmission signal and a horizontally polarized transmission signal and amplified for the purpose of extending the coverage, and each amplified transmission signal Is transmitted through the antenna.

As described above, dividing and transmitting a single transmission signal into a vertically polarized transmission signal and a horizontally polarized transmission signal is for improving the output of the transmission signal, and in order to improve the output of the transmission signal, the vertically polarized transmission signal and the horizontal polarization It should be assumed that the phases are the same between the transmission signals.

However, the vertically polarized transmission signal divided from the single transmission signal and the horizontally polarized transmission signal are transmitted to the antenna through different paths (for example, a cable). In this case, the vertically polarized transmission signal and the horizontal polarization due to different paths A phase difference may occur between transmission signals.

As a result, when a phase difference occurs between the vertically polarized transmission signal and the horizontally polarized transmission signal, as described above, there is a limitation in that the transmission signal is distorted or even canceled, so that an improvement in the output of the transmission signal cannot be expected at all.

The present invention was created in view of the above circumstances, and an object of the present invention is to divide a transmission signal of a communication method that does not support the MIMO (Multi Input Multi Output) method into a plurality of transmission signals and to perform different paths (Paths). ) To compensate for a phase difference between transmission signals that may occur due to the different paths, thereby preventing a transmission signal from being distorted or canceled due to a phase difference between transmission signals.

The phase compensation apparatus according to the first aspect of the present invention for achieving the above object, a second communication method transmitted to the antenna through a first cable and a second cable for transmitting a transmission signal of the first communication method to the antenna A reception step of receiving the transmission signals of the respective; Measurement for measuring a timing error caused by a difference in length between the first cable and the second cable, based on the reception time point of each transmission signal of the second communication method received through the first cable and the second cable step; And calculating the length difference between the first cable and the second cable based on the measured timing error, and when the calculated length difference is compensated, to the antenna through the first cable and the second cable, respectively. And a calculation step of preventing a phase difference from occurring between the transmitted transmission signals of the first communication method.

More specifically, the transmission signal of the first communication method includes a vertical polarization transmission signal and a horizontal polarization transmission signal classified from the same transmission signal, and the vertical polarization transmission signal includes the first cable or the second cable. It is transmitted to the antenna, and the horizontally polarized transmission signal is transmitted to the antenna through the rest of the first polarized transmission signal is not transmitted from the first cable or the second cable.

More specifically, the transmission signal of the second communication method received through the first cable and the second cable includes respective reference signals (RS) capable of confirming a transmission time from the base station, The timing error is measured from a time difference between the reception times when the transmission times identified from the reference signal are the same for each transmission signal of the second communication method received through the first cable and the second cable. It is characterized by being.

More specifically, at least one of the first cable and the second cable includes a cable connector for connecting a compensation cable with respect to length adjustment, and compensation for the calculated length difference is the cable connector. It characterized in that it is made by additionally connecting the compensation cable by the calculated length difference or by separating the compensation cable which is already connected to the cable connector.

The phase compensation apparatus according to the second aspect of the present invention for achieving the above object, the second communication method is transmitted to the antenna through a first cable and a second cable for transmitting a transmission signal of the first communication method to the antenna Receiving unit for receiving each of the transmission signal; Measurement for measuring a timing error caused by a difference in length between the first cable and the second cable, based on the reception time point of each transmission signal of the second communication method received through the first cable and the second cable part; And calculating the length difference between the first cable and the second cable based on the measured timing error, and when the calculated length difference is compensated, to the antenna through the first cable and the second cable, respectively. It characterized in that it comprises a calculator for preventing the phase difference between the transmission signal of the first communication method to be transmitted.

Accordingly, according to the phase compensation apparatus and the operation method of the present invention, a transmission signal of a communication method that does not support the MIMO (Multi Input Multi Output) method is divided into a plurality of transmission signals and transmitted to the antenna through different paths. In some cases, by compensating for a phase difference between transmission signals that may occur due to the different paths, it is possible to prevent a transmission signal from being distorted or canceled due to a phase difference between transmission signals.

1 is a schematic configuration diagram of a phase compensation device according to an embodiment of the present invention.
2 to 7 are views for explaining a phase difference according to an embodiment of the present invention.
8 is a flow chart for explaining the operation flow in the phase compensation apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a view showing a phase compensation device according to an embodiment of the present invention.

As shown in Figure 1, the phase compensation apparatus according to an embodiment of the present invention, through the first cable (1) and the second cable (2) for transmitting a transmission signal of the first communication method to the antenna Receiving unit 100 for receiving the transmission signal of the second communication method transmitted to the antenna, measuring unit 200 for measuring the timing error between the transmission signal of the second communication method respectively received through the first cable and the second cable, And a calculator 300 that calculates a difference in length between the first cable and the second cable based on the measured timing error.

All or part of the configuration of the phase compensator according to an embodiment of the present invention including the receiving unit 100, the measuring unit 200, and the calculating unit 300, or implemented in the form of a software module or a hardware module, Or a combination thereof.

Such a phase compensation device has a structure that is integrated with a base station that transmits, for example, a transmission signal of the first communication method and a transmission signal of the second communication method through the antenna 3, or as a separate device from the base station. Can be implemented.

Here, the transmission signal of the first communication method refers to a communication method that does not support the Multi Input Multi Output (MIMO) method, for example, 3G communication method WCDMA.

In the case of the transmission signal of the above first communication method, for the purpose of improving its output, it can be divided into a vertically polarized transmission signal and a horizontally polarized transmission signal. For convenience, the vertically polarized transmission signal is '3G Tx_0' and the horizontally polarized transmission signal is Named '3G Tx_1', the vertically polarized transmission signal (3G Tx_0) is transmitted to the antenna 3 through the first cable 1, and the horizontally polarized transmission signal (3G Tx_1) is transmitted through the second cable 2 It will be described on the assumption that it is transmitted to the antenna (3).

In addition, the transmission signal of the second communication method refers to the aforementioned MIMO method, and may be, for example, LTE, which is a 4G communication method.

The transmission signal of the second communication method can also be divided into a vertically polarized transmission signal and a horizontally polarized transmission signal by the MIMO method, for convenience, the vertically polarized transmission signal is'LTE Tx_0', and the horizontally polarized transmission signal is'LTE'. Named Tx_1', the vertically polarized transmission signal (LTE Tx_0) is transmitted to the antenna 3 through the first cable 1, and the horizontally polarized transmission signal (LTE Tx_1) is transmitted through the second cable 2 through the antenna ( It will be explained on the assumption that it is transferred to 3).

Here, the vertical polarization transmission signal (LTE Tx_0) and the horizontal polarization transmission signal (LTE Tx_1) divided from the transmission signal of the second communication method include respective reference signals (RSs) for checking the transmission timing. The reference signal is the same as a pilot signal in the first communication method, and can be used to match timing synchronization.

Accordingly, in the case of a reference signal included in each of the vertical polarization transmission signal (LTE Tx_0) and the horizontal polarization transmission signal (LTE Tx_1) of the second communication method, different frequencies (sub carriers) are used according to the application of the MIMO method. , Since the symbol timing is different, the time between the transmission time point and the reception time point can be checked for each of the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1).

As a result, the first polarization transmission signal (3G Tx_0) of the first communication method and the vertical polarization transmission signal (LTE Tx_0) of the second communication method are transmitted to the antenna 30 through the first cable 1, and the second Through the cable 2, the horizontal polarization transmission signal 3G Tx_1 of the first communication method and the horizontal polarization transmission signal LTE Tx_1 of the second communication method are transmitted to the antenna 3 together.

Accordingly, the antenna 3 has a structure of a dual band dual polarized antenna capable of radiating both transmission signals received through the first cable 1 and the second cable 2.

On the other hand, according to an embodiment of the present invention, the antenna 3 operates by radiating together a transmission signal of a first communication method classified as a vertically polarized transmission signal and a horizontally polarized transmission signal for the purpose of improving its output. .

In this way, in radiating the vertically polarized transmission signal (3G Tx_0) and the horizontally polarized transmission signal (3G Tx_1) from the antenna 3, in order to improve the output, the vertically polarized transmission signal (3G Tx_0) and the horizontal polarization transmission It should be assumed that the phases are the same between the signals 3G Tx_1.

In this regard, in the case of the existing first communication method, unlike the second communication method, the MIMO method is not a user, but because the received signal (RX) diversity is used, the dual polarized antenna shown in FIG. 2 is used. The received signal is received in two passes, Rx_0 and Rx_1.

At this time, the transmission signal (Tx) of the first communication method is carried by being carried on both Rx_0 and Rx_1 side paths in a single pass.

Here, the signals emitted from the -45° and +45° arrays of the dual polarized antenna are divided into vertical polarization and horizontal polarization, as shown in FIG. 3, and if the phases of the two passes are the same, they are radiated from each. The horizontal or vertical polarizations will be summed and can cancel each other out of phase.

For example, in an area where the coverage to be provided by a base station is 15 Km or more in radius (including an island) or a hiking trail, the output of the first communication type transmission signal should be made as high as possible to reach the transmission signal farther away. do.

Accordingly, as shown in FIG. 4, for the purpose of servicing a wide range of coverage such as sea and hiking trails, the transmission signal of the first communication method is a vertically polarized transmission signal (Tx_0) and a horizontally polarized transmission signal (Tx_1). If divided and amplified by two power amplifiers, and the amplified transmission signal is transmitted to an array of dual polarized antennas, it is possible to service twice the distance due to the high 3dB output.

However, in the case of the vertically polarized transmission signal (Tx_0) and the horizontally polarized transmission signal (Tx_1) transmitted through the array of dual polarized antennas, since the signals are divided from a single transmission signal unlike the second communication method, orthogonality between each other ( Othogonality) may cause phase interference between each other.

After all, when amplifying the transmission signal of the first communication method separately into the vertically polarized transmission signal (Tx_0) and the horizontally polarized transmission signal (Tx_1) and transmitting them to the dual polarized antenna, delay or phase difference between the two paths does not occur. In order to do this, the length of the cable connected to the antenna input terminal must be the same or fit within an integer multiple of the wavelength (λ) (eg, λ).

However, in general, the antenna is usually located on the top of a pylon installed on the roof of a building, or in the case of maritime service, it is usually installed on a mountain or highland.

Accordingly, as shown in FIG. 5, the length of the cable connecting the RF terminal of the base station and the antenna must be laid as far as 200 to 300 m, so that the vertical polarization transmission signal transmitted to the antenna through each cable at the RF terminal of the base station The phase difference caused by the difference in cable length between (Tx_0) and the horizontally polarized transmission signal (Tx_1) cannot be guaranteed.

Moreover, since the first communication method uses a band of 1.8 to 2 GHz, one wavelength (λ) is within 30 cm of the cable length, so if the length is slightly different between the cables, the vertical polarization transmission signal (Tx_0) and the horizontal polarization transmission signal A phase difference may occur between (Tx_1), resulting in signal distortion or cancellation.

For reference, when a phase difference occurs between the vertically polarized transmission signal Tx_0 and the horizontally polarized transmission signal Tx_1, distortion or cancellation of the signal occurs as illustrated in FIG. 6.

First, in the case of FIG. 6 (a), as an example in which a slight phase difference occurs between the vertically polarized transmission signal Tx_0 and the horizontally polarized transmission signal Tx_1, the transmission signal received by the subscriber station is greatly distorted compared to the original signal Will be.

Next, in the case of FIG. 6 (b), 180°, that is, a phase difference of 1/2 wavelength (λ) occurs between the vertically polarized transmission signal Tx_0 and the horizontally polarized transmission signal Tx_1, and the two signals are completely canceled. As a result, the strength of the transmission signal received by the subscriber station is significantly reduced than the original, which may lead to a state in which service is impossible.

As a result, in the first communication method, if the transmission signal is to be divided into a vertically polarized transmission signal (Tx_0) and a horizontally polarized transmission signal (Tx_1) for the purpose of improving the output of the transmission signal, the vertically polarized transmission signal (Tx_0), A method for compensating for a phase difference that may occur due to a difference in length between cables for transmitting the horizontally polarized transmission signal Tx_1 to the antenna will be required.

Meanwhile, as shown in FIG. 7, recently, in order to reduce the base station construction cost, the transmission signals of the first communication method (3G Tx_0, 3G Tx_1) and the transmission signals of the second communication method (LTE Tx_0, LTE Tx_1) are doubled. After combining using a band combiner, the transmitted signals of the first communication method and the transmission signal of the second communication method are radiated together through the antenna by transmitting the combined transmission signals to the dual band dual polarization antenna through respective cables. Dual band services are common.

Thus, in one embodiment of the present invention, on the premise of the above dual band service, in transmitting the vertically polarized transmission signal (3G Tx_0,) and the horizontally polarized transmission signal (3G Tx_1) of the first communication method to the antenna, between the cables A new method for compensating for a phase difference that may occur due to a length difference is proposed, and will be described in detail below.

The receiving unit 100 performs a function of receiving a transmission signal of a second communication method through the first cable 1 and the second cable 2.

More specifically, the receiving unit 100 is transmitted from the RF terminal of the base station to the antenna 3 through the first cable 1 for transmitting the vertical polarization transmission signal 3G Tx_0 of the first communication method to the antenna 3. The transmitted vertical polarization transmission signal (LTE Tx_0) of the second communication method is received at the front end of the antenna 3, which is a point where the connection of the first cable 1 is terminated.

Similarly, the receiving unit 100 through the second cable 2 for transmitting the horizontal polarization transmission signal (3G Tx_1) of the first communication method to the antenna 3, from the RF terminal of the base station to the antenna (3) The transmitted horizontal polarization transmission signal (LTE Tx_1) of the second communication method is received at the front end of the antenna 3, which is the point where the connection of the second cable 2 is terminated.

Here, the vertical polarization transmission signal (LTE Tx_0) and the horizontal polarization transmission signal (LTE Tx_1) transmitted through the first cable (1) and the second cable (2), respectively, from the RF terminal of the base station as mentioned above A reference signal (RS) for confirming each transmission time is included.

The measurement unit 200 performs a function of measuring a timing error using a transmission signal of a second communication method received through the first cable 1 and the second cable 2.

More specifically, when the measurement unit 200 receives the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) transmitted through the first cable 1 and the second cable 2, respectively, The vertical polarization transmission signal (LTE) generated from the difference in length between the first cable (1) and the second cable (2) based on the reception timing of each of the vertical polarization transmission signal (LTE Tx_0) and the horizontal polarization transmission signal (LTE Tx_1). Tx_0) and a horizontal polarization transmission signal (LTE Tx_1) to measure the timing error.

At this time, the measurement unit 200, for each of the vertical polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1), using a reference signal to determine the transmission time from the base station RF end, the confirmed transmission time The timing error between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) is measured from the time difference between and the reception time.

That is, on the premise that the transmission time of each of the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) transmitted from the base station RF terminal is the same, and the first cable 1 for transmitting each transmission signal and If there is a length difference between the second cables 2, the reception of the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) received through the first cable 1 and the second cable 2 The time points will be different from each other, and this different time difference can be measured as a timing error.

As a result, the timing error between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) is measured, which means that a length difference occurred between the first cable 1 and the second cable 2 This is a first polarization transmission signal (3G0 Tx_0) of the first communication method and a horizontal polarization transmission signal (3G Tx_1) transmitted to the antenna 3 through each of the first cable 1 and the second cable 2 It means that there is a phase difference between the two.

If the timing error between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) is not measured, the antenna 3 is transmitted through the first cable 1 and the second cable 2, respectively. It can be expected that a phase difference does not occur between the vertically polarized transmission signal 3G0 Tx_0 of the first communication method and the horizontally polarized transmission signal 3G Tx_1 transmitted by.

The calculator 300 calculates a difference in length between the first cable 1 and the second cable 2 based on the measured timing error.

More specifically, when the timing error is measured between the vertically polarized transmission signal LTE Tx_0 and the horizontally polarized transmission signal LTE Tx_1, the calculator 300 first cable 1 corresponding to the measured timing error value The difference in length between the and the second cable 2 is calculated.

Here, the timing error is measured by the difference between the time at which the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) are transmitted from the RF terminal of the base station at the same transmission time. This is due to the difference in length between the 1 cable 1 and the 2 cable 2.

Accordingly, the calculation unit 300 is a cable length capable of generating a time difference as much as a timing error value measured based on the signal transmission speed according to the conductor characteristics defined in each of the first cable 1 and the second table 2 Will calculate

After all, the calculation unit 300 calculates the difference in length as much as the timing error value measured between the first cable 1 and the second cable 2, thereby compensating for the calculated length difference, so that the first There is no phase difference between the vertically polarized transmission signal (3G0 Tx_0) of the first communication method and the horizontally polarized transmission signal (3G Tx_1) transmitted to the antenna 3 through each of the cable 1 and the second cable 2. Do not.

Meanwhile, at least one of the first cable 1 and the second cable 2 according to an embodiment of the present invention includes a cable connector 4 capable of connecting a compensation cable for adjusting the cable length.

Accordingly, the compensation for the aforementioned calculated length difference is to additionally connect a compensation cable equal to the calculated length difference to the cable connector 4, or to separate the compensation cable already connected to the cable connector 4 It can be done in a way.

Here, the compensation cable includes a first polarization transmission signal (3G0 Tx_0) of the first communication method and a horizontal polarization transmission signal (3G) transmitted to the antenna 3 through each of the first cable 1 and the second cable 2 Tx_1) may be provided in a unit length corresponding to 0.1 wavelength (λ) to 1 wavelength (λ) to compensate for a maximum phase difference (1/2λ) that may occur.

As described above, according to the phase compensation apparatus according to an embodiment of the present invention, the transmission signal of the first communication method that does not support the MIMO (Multi Input Multi Output) method is divided into an antenna through different paths. In the case of transmission, the MIMO scheme is supported, and the first error that may occur due to the different paths is based on the timing error value of the transmission signal of the second communication scheme transmitted in the same path as the transmission signal of the first communication scheme. By compensating the phase difference between the transmission signals of the communication method, it is possible to prevent the transmission signal from being distorted or canceled due to the phase difference between the transmission signals.

Hereinafter, with reference to Figure 8, it will be described the operation flow made in the phase compensation apparatus according to an embodiment of the present invention. Here, for convenience of description, the above-described configuration shown in FIG. 1 will be described with reference to the reference number.

First, the receiving unit 100 receives the transmission signal of the second communication method through the first cable (1) and the second cable (2) (S110).

At this time, the receiving unit 100 is transmitted from the RF terminal of the base station to the antenna 3 through a first cable 1 for transmitting the vertical polarization transmission signal (3G Tx_0) of the first communication method to the antenna 3 The second communication type vertical polarization transmission signal (LTE Tx_0) is received at the front end of the antenna 3, which is the point where the connection of the first cable 1 is terminated.

Similarly, the receiving unit 100 through the second cable 2 for transmitting the horizontal polarization transmission signal (3G Tx_1) of the first communication method to the antenna 3, from the RF terminal of the base station to the antenna (3) The transmitted horizontal polarization transmission signal (LTE Tx_1) of the second communication method is received at the front end of the antenna 3, which is the point where the connection of the second cable 2 is terminated.

Then, the measurement unit 200 receives the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) transmitted through the first cable 1 and the second cable 2, respectively, The polarization transmission signal (LTE Tx_0) and the vertical polarization transmission signal (LTE Tx_0) generated from the difference in length between the first cable (1) and the second cable (2) based on the reception timing of each of the horizontal polarization transmission signal (LTE Tx_1) ) And the timing error between the horizontal polarization transmission signal (LTE Tx_1) is measured (S120).

At this time, the measurement unit 200 checks the transmission time from the base station RF end using the reference signal for each of the vertical polarization transmission signal (LTE Tx_0) and the horizontal polarization transmission signal (LTE Tx_1), and the confirmed transmission time point The timing error between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) is measured from the time difference between and the reception time.

That is, on the premise that the transmission time of each of the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) transmitted from the base station RF terminal is the same, and the first cable 1 for transmitting each transmission signal and If there is a length difference between the second cables 2, the reception of the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) received through the first cable 1 and the second cable 2 The time points will be different from each other, and this different time difference can be measured as a timing error.

As a result, the timing error between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) is measured, which means that a length difference occurred between the first cable 1 and the second cable 2 This is a first polarization transmission signal (3G0 Tx_0) of the first communication method and a horizontal polarization transmission signal (3G Tx_1) transmitted to the antenna 3 through each of the first cable 1 and the second cable 2 It means that there is a phase difference between the two.

If the timing error between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1) is not measured, the antenna 3 is transmitted through the first cable 1 and the second cable 2, respectively. It can be expected that a phase difference does not occur between the vertically polarized transmission signal 3G0 Tx_0 of the first communication method and the horizontally polarized transmission signal 3G Tx_1 transmitted by.

Thereafter, when the timing error is measured between the vertically polarized transmission signal (LTE Tx_0) and the horizontally polarized transmission signal (LTE Tx_1), the calculator 300 is configured with a first cable 1 corresponding to the measured timing error value. The length difference between the 2 cables 2 is calculated (S130-S150).

At this time, the calculation unit 300 is a cable length that can generate a time difference by a timing error value measured based on the signal transmission speed according to the conductor characteristics defined in each of the first cable 1 and the second table 2 By calculating the compensation for the calculated length difference, the vertically polarized transmission signal of the first communication method transmitted to the antenna 3 through each of the first cable 1 and the second cable 2 3G0 Tx_0) and the horizontal polarization transmission signal (3G Tx_1) so that no phase difference occurs.

As described above, according to the operation method of the phase compensator according to an embodiment of the present invention, the transmission signal of the first communication method that does not support the MIMO (Multi Input Multi Output) method is divided through different paths. When transmitting to an antenna, MIMO is supported, and may occur due to the different paths based on a timing error value of a transmission signal of a second communication method transmitted in the same path as the transmission signal of the first communication method. By compensating the phase difference between the transmission signals of the first communication method, it is possible to prevent the transmission signal from being distorted or canceled due to the phase difference between the transmission signals.

Meanwhile, steps of the method or algorithm described in connection with the embodiments presented herein may be directly implemented in hardware or may be recorded in a computer readable medium by being implemented in the form of program instructions that can be performed through various computer means. The computer-readable medium may include program instructions, data files, data structures, or the like alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and usable by those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs, DVDs, and magnetic media such as floptical disks. -Hardware devices specifically configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, etc., as well as machine language codes produced by a compiler. The hardware device described above may be configured to operate as one or more software modules to perform the operation of the present invention, and vice versa.

The present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above-described embodiments, and the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims below. Anyone with ordinary knowledge in the technical idea of the present invention extends to the extent that various modifications or modifications are possible.

According to the phase compensation apparatus and its operation method of the present invention, when a transmission signal of a communication method that does not support the MIMO (Multi Input Multi Output) method is divided into a plurality of transmission signals and transmitted to the antenna through different paths In addition, in that it compensates for a phase difference between transmission signals that may occur due to the different paths, as it exceeds the limitations of the existing technology, not only the use of the related technology but also the possibility of marketing or sales of the applied device is sufficient. It is an invention that has industrial applicability because it can be practiced clearly in reality.

100: receiver
200: measuring unit
300: calculation unit

Claims (5)

A receiving step of receiving a transmission signal of a second communication method transmitted to the antenna through a first cable and a second cable for transmitting a transmission signal of a first communication method to an antenna;
The first cable and the agent are based on the reception time of the transmission signal of the second communication method received through the first cable and the reception time of the transmission signal of the second communication method received through the second cable. A measurement step of measuring a timing error resulting from a difference in length between the two cables; And
A calculation step of calculating a length difference between the first cable and the second cable based on the measured timing error, so as to compensate for the calculated length difference for the first cable or the second cable. Phase difference compensation method comprising a. According to claim 1,
The transmission signal of the first communication method,
The vertically polarized transmission signal and the horizontally polarized transmission signal classified from the same transmission signal are included.
The vertical polarization transmission signal,
It is transmitted to the antenna through the first cable or the second cable,
The horizontal polarization transmission signal,
A method for compensating for phase difference, wherein the vertical polarization transmission signal is transmitted to the antenna through the rest of the first cable or the second cable, which is not transmitted. According to claim 1,
In the transmission signal of the second communication method received through the first cable and the second cable,
Each reference signal (RS) that can confirm the transmission time is included,
The timing error is,
When the transmission time identified from the reference signal is the same for each transmission signal of the second communication method received through the first cable and the second cable, it is characterized in that it is measured from the time difference between the reception time Phase difference compensation method. According to claim 1,
At least one of the first cable and the second cable,
Includes cable connector for connecting compensation cables for length adjustment,
Compensation for the calculated length difference,
A method of compensating for a phase difference, characterized by further connecting the compensation cable by the calculated length difference to the cable connector, or by separating the compensation cable already connected to the cable connector. A receiving unit for receiving transmission signals of a second communication method transmitted to the antenna through a first cable and a second cable for transmitting a transmission signal of a first communication method to an antenna;
The first cable and the agent are based on the reception time of the transmission signal of the second communication method received through the first cable and the reception time of the transmission signal of the second communication method received through the second cable. A measuring unit for measuring a timing error arising from a difference in length between two cables; And
Includes a calculation unit to calculate the length difference between the first cable and the second cable based on the measured timing error, and compensate for the calculated length difference for the first cable or the second cable Phase compensation device, characterized in that.

Images